机床

This article discusses about how to fix the position of rolling stock wheelsets onto the underfloor wheel lathe and analyses the positioning principles and characteristics of the friction driving roller s based on the underfloor wheel lathe manufactured by SCULFORT.

结合法国SCULFORT公司生产的数控不落轮机床，就机车车辆轮对在不落轮机床上的定位方法展开论述，分析其摩擦驱动轮的定位原理及其特点，并结合其它不落轮机床的定位结构形式进行了综合比较。

ABSTRACT Based on the analysis of recent research on machine tool spindles at home and abroad, this thesis makes the thorough study on the dynamic behaviour and static stiffness of machine tool spindles and develops a new kind of machine tool spindle of good dynamic behaviour.

本文在分析国内外机床主轴部件研究现状的基础上，深入研究了机床主轴部件的动、静态性能，并开发了一种新颖的具有优良动态性能的高阻尼机床主轴部。。。

Agents more than 10 years only a few brands, such as: the world's largest machine tool company Disen the plane and automatic; U.S. sales of the largest CNC machine tools The Haas machining centers, lathes and table; world's leading high-grade sheet metal wood equipment manufacturers in Japan's Murata sheet metal equipment such as wood, only the above three brands of machine tools in China had sold nearly 3,000 Taiwan.

十多年来只代理几个品牌，如：全球第一大机床集团蒂森公司的专机和自动线；美国CNC机床销量最大的哈斯加工中心、车床及转台；全球著名的高档钣材设备制造商日本村田的钣材设备等，仅上述三个品牌的机床在国内就已售出近三千台。

Also has finishing equipment: machine tool suit, a few empty machine, 140 machine tools, spline milling machine, cylindrical grinder, drilling machine, such as dozens of Units.

还拥有精加工设备：仿行机床，数空机床，140机床，花键铣床，外圆磨床，钻床等几十台。

With a history of nearly 50 years, the Institute has researched and developed the following major technologies and products: vertical/horizontal machining center, precision and ultra-precision machine tool,ball screw, coordinate measuring machine and other precision measuring instruments and equiment,pneumatic-hydraulic/electro-hydraulic technology and concerned products; EDM technology and equipment; NC system and driving device; laser machining technology and relative product; computer application technology,etc.

北京机床研究所具有国内领先的技术水平和实力及近五十年的数控机床技术开发、应用、维护经验，为用户提供全程的、全方位的技术支持服务。近五十年来，我们从事研发的主要技术与产品有：立卧式加工中心；精密及超精密机床；滚珠丝杠副；三坐标测量机及其它精密测量仪器设备；气液电液技术及相关产品；电加工工艺及设备；数控系统及驱动装置；激光加工技术及相关产品；计算机应用技术等。

Our company specializes in serial machinery,hydraulic pressure and cuts the board machine,rolls over the curved machine,rolling machine,have made to prder various kinds of nonstandard series is it roll over lathe to cut,products apply metallurgy,shiping,packaging,stainless steel products and trade of mounting etc.extensively.

河南郑州海顺机床制造有限公司位于河南郑州市经济技术开发区。地处黄海之滨，长江三角洲，紧靠宁启铁路、新长铁路、沿海高速，交通极为便捷。本公司专业生产系列机床、液压剪板机、折弯机、卷板机，亦可根据客户需求订做各种非标系列剪折机床，产品广泛应用于冶金、船舶、包装、不锈钢制品及装潢等行业。

Our company specializes in serial machinery,hydraulic pressure and cuts the board machine,rolls over the curved machine,rolling machine,have made to prder various kinds of nonstandard series is it roll over lathe to cut,products apply metallurgy,shiping,packaging,stainless steel products and trade of mounting etc.extensively.

河南郑州风神机床制造有限公司位于河南郑州市经济技术开发区。地处黄海之滨，长江三角洲，紧靠宁启铁路、新长铁路、沿海高速，交通极为便捷。本公司专业生产系列机床、液压剪板机、折弯机、卷板机，亦可根据客户需求订做各种非标系列剪折机床，产品广泛应用于冶金、船舶、包装、不锈钢制品及装潢等行业。

Our company specializes in serial machinery,hydraulic pressure and cuts the board machine,rolls over the curved machine,rolling machine,have made to prder various kinds of nonstandard series is it roll over lathe to cut,products apply metallurgy,shiping,packaging,stainless steel products and trade of mounting etc.extensively.

河南郑州力神机床制造有限公司位于河南郑州市经济技术开发区。地处黄海之滨，长江三角洲，紧靠宁启铁路、新长铁路、沿海高速，交通极为便捷。本公司专业生产系列机床、液压剪板机、折弯机、卷板机，亦可根据客户需求订做各种非标系列剪折机床，产品广泛应用于冶金、船舶、包装、不锈钢制品及装潢等行业。

Machining capability includes machining quality and cutting efficiency. Machines machining capability is usually assessed by the tiptop precision and superficial roughness that can be reached of the being processed part. The cutting efficiency is usually assessed by the most limit value of removal rate or cutting dosage.

机床的加工性能包括其加工质量和切削效率两个重要的方面，通常甩被加工零件能达到的最高精度和表面光洁度来评定机床的加工质量，用金属切除率或切削用量的最大极限值来评定机床的切削效率。

To regulate the spindle speed to the stable region can not only make the cutting process stable and achieve excellent workpiece surface, but also improve the metal removal rate by enlarging the cutting depth . The experiment results show that the limit cutting depth can be greatly improved.

将机床主轴转速调整到稳定区工作不但可以使切削过程稳定，获得优良的加工表面，而且可以通过进一步增大切削深度提高机床切削效率，本文对优控主轴转速下机床切削系统的极限切削深度进行了试验考证。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了